the changing environment. the physical environment. >> and very important to note that bunker, shep, was only 6 feet by 8 feet. very little room forerer. >> and when he climbed the ladder they busted up in there that's incredible. they bound bombs in there, too? >> yeah, this thing was definitely rigged to blow, shep. one of those bombs was found inside that rent legs pipe that police were using to communicate to jim were lee jimmie lee dykes that entire week. the other one was inside the bunker. the fbi says that dykes tried to fortify the door to keep rescue teams out that clearly did not work. the fbi says both bombs were, quote: disrupted. it's unclear if that means they were disarmed or if they were deston nateed but the bomb squad has cleared that bunker as well as rest of the property belonging to jimmie lee dykes, shep. >> shepard: few people can have much of an idea about the kind of things ethan went through in that bunker, but one woman may, her name is katie beers. back in 1992, a neighbor kidnappe